Body Mass Index (BMI)

Body Mass Index (BMI) is a numerical value of your weight in relation to your height. It is used to determine if your weight is healthy or unhealthy. BMI is a quick, inexpensive and easy-to-perform method to check if a person is underweight, of normal weight, or overweight or obese. BMI is a good indicator of body fat but does not measure muscle mass; hence, it is not an accurate indicator for those who have a lot of muscle bulk, like body builders.

The scale is an initial indicator to help determine potential health problems if the person is of unhealthy weight. However, your doctor may perform further assessments such as evaluation of diet, body composition analysis, measurement of skinfold thickness, physical activity, family history and other health screenings to determine associated health risks.

BMI Calculator

Height

Weight

Inches

BMI result

The body mass index range for adults 20 and over is shown here:

BMI

Weight Status

Below 18.5

Underweight

18.6 – 24.9

Normal

25-29.9

Overweight

30.0 and above

Obese

Individuals with a BMI of 35-39.9 are considered seriously obese, and individuals with a BMI of 40 or higher are considered severely obese.

Generally, weight loss surgery is appropriate for individuals with a BMI of 40 or higher, and for individuals with a BMI of 35-39.9 and one or more weight-related health conditions.